As it stands, Tigers general manager Dave Dombrowski currently is in the process of evaluating a market that remains in the early developmental stages with many teams still unsure whether they'll be buyers or sellers at the non-waiver trade deadline.

"He’s like all other general managers," Leyland said. "He’s trying to get a pulse for what’s going on."

As a result, the Tigers aren't expected to be in deep discussions with any club regarding a specific deal -- rather, they're simply skimming the market and inquiring about potential fits.

FOX Sports reported both clubs have engaged in conversation and it's possible the Diamondbacks could seek the services of shortstop Jhonny Peralta in exchange for one or both.

Peralta, who is hitting .267 with six homers and 32 RBIs this year, is in the final year of a two-year deal worth $11.25 million. The contract includes a third-year option worth $6 million with a $500,000 buyout.

The Diamondbacks avoided arbitration with Roberts this past offseason by signing him to a one-year, $2 million deal. He's eligible for arbitration this offseason, too.

Roberts is batting .240 with a .87 on-base percentage and .353 slugging percentage in 76 games for Arizona. It's significantly worse than the career highs he put up in 2011 when he hit 19 homers and added 65 RBIs.

The 31-year-old right-handed hitter has made the majority of his starts the season at third base, but has split his time at second base and in left field, too.

The left-handed hitting Drew has missed nearly an entire calendar year recovering from a fractured right ankle that has limited him to 12 games this season. He's hitting .205 with three RBIs.

As part of the two-year, $13.75 million deal he signed in 2011, Drew has a mutual option on his contract for 2013 which will pay him $10 million if it's exercised. If not, he'd receive a $1.35 million buyout.